Wireless speaker



FIG. 1 is a perspective view of a wireless speaker;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof; a part is shown separately for ease of illustration;

FIG. 5 is a right side view thereof; a part is shown separately for ease of illustration;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures depict portions of the wireless speaker that form no part of the claimed design. 

CLAIM The ornamental design for a “wireless speaker”, as shown and described. 